Another Torsion Bar Question?

Erik1972 · August 5, 2008

I know this has been beat to death but I searched and haven't found exactly the answer I need. So on my newly aquired '05 Silverado 4x4 w/Quadrasteer, I wanted to raise the front some as the non Z71's seem to rake towards the front alot.

I did a preliminary measurement from the ground to the wheel well with the tires inflated the same. I came up with 36" from ground to fender lip. I then proceeded to jack the truck up and turn the bolts 4 complete revolutions. These are the measurements I cam up with afterwards. Passenger side ground to fender lip = 36 7/8", Passenger torsion bolt thread still showing = 1/4". Drivers side ground to fender lip = 37 1/8", Drivers side torsion bolt thread still showing = 3/8".

So my questions is this: What is the goal of cranking up the torsion bars besides raising the front of the truck? Should these measurements be equal on both sides of the truck from the ground to the fender lip, is this what the torsion bars level out? Is it acceptable to have this much difference between thread showing?

What is the ultimate goal of the measurements?

Sorry for all the questions, I just want it to be done right.

Thanks, Erik

2000DV4.8 · August 5, 2008

I know this has been beat to death but I searched and haven't found exactly the answer I need. So on my newly aquired '05 Silverado 4x4 w/Quadrasteer, I wanted to raise the front some as the non Z71's seem to rake towards the front alot.

I did a preliminary measurement from the ground to the wheel well with the tires inflated the same. I came up with 36" from ground to fender lip. I then proceeded to jack the truck up and turn the bolts 4 complete revolutions. These are the measurements I cam up with afterwards. Passenger side ground to fender lip = 36 7/8", Passenger torsion bolt thread still showing = 1/4". Drivers side ground to fender lip = 37 1/8", Drivers side torsion bolt thread still showing = 3/8".

So my questions is this: What is the goal of cranking up the torsion bars besides raising the front of the truck? Should these measurements be equal on both sides of the truck from the ground to the fender lip, is this what the torsion bars level out? Is it acceptable to have this much difference between thread showing?

What is the ultimate goal of the measurements?

Sorry for all the questions, I just want it to be done right.

Thanks, Erik

The only real goal of cranking is to 'lift' the front of the truck, and level it side to side. The difference in thread showing is perfectly normal. If I were in your situation, I would crank the drivers side so the truck will be sitting level side to side. Also, before you take your measurements, bounce on the bumper, and drive around the block to let the suspension settle a little bit.

Also, make sure you get an alignment when you're at the desired height.

Erik1972 · August 5, 2008

My drivers side is already higher then the passenger side so cranking it would actually raise it even higher. i assume you meant crank the passenger side to level it out or lower the driver side to level it out?

Thanks for the fast reply.

Erik

2000DV4.8 · August 5, 2008

My drivers side is already higher then the passenger side so cranking it would actually raise it even higher. i assume you meant crank the passenger side to level it out or lower the driver side to level it out?

Thanks for the fast reply.

Erik

Yeah sorry I read the measurements wrong. You don't want to crank much more than an inch over stock height, or your ride will start to suffer.

Erik1972 · August 12, 2008

So I have about 1/4" of thread showing between the head of the torsion bar bolt and the metal bracket is this as far as they can be adjusted. There seems to be alot of threads showing on the bolt between the bracket and the key. As I turn the bolt in does the key go up or does it thread down on the bolt?

Thanks, Erik